Democratic Sentinel, Volume 10, Number 21, Rensselaer, Jasper County, 25 June 1886 — Work of Observatories. [ARTICLE]

Work of Observatories.

Progress in astronomy no longer depends upon chance observation, but is now effected by a division of labor and a concentration at certain points upon some one particular object of research. The leading observatories all work at specialties. At Harvard the relative magnitude of the stars receives chief attention; at Princeton, spectroscopy; at Alleghany Observatory, the dark part of the solar spectrum and the effect of the invisible heat rays on the earth; at the National Observatory, positions and orbits of satellites; at Cincinnati, double stars; at Chicago, the surface of J upiter; and at Albany and Yale, the perfecting of maps of the heavens.